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mfd: lpc_ich: Fix resource request for [mem 0x00000000] 

The older southbridges supported by the lpc_ich driver do not
provide memory-mapped space of the root complex. The driver
correctly avoids computing the iomem address in this case, yet
submits a zeroed resource request anyway (via mfd_add_devices()).

Remove the iomem resource from the resource array submitted to the
mfd core for the older southbridges.

Acked-by: Aaron Sierra <asierra@xes-inc.com>
Cc: Peter Tyser <ptyser@xes-inc.com>
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This commit is contained in:
Peter Hurley 2012-11-21 17:30:50 +01:00 committed by Samuel Ortiz
parent d640e75794
commit e294bc9176
1 changed files with 4 additions and 1 deletions
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5
drivers/mfd/lpc_ich.c
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@ -830,7 +830,10 @@ static int __devinit lpc_ich_init_wdt(struct pci_dev *dev,
* we have to read RCBA from PCI Config space 0xf0 and use
* it as base. GCS = RCBA + ICH6_GCS(0x3410).
*/
if (lpc_chipset_info[id->driver_data].iTCO_version == 2) {
if (lpc_chipset_info[id->driver_data].iTCO_version == 1) {
/* Don't register iomem for TCO ver 1 */
lpc_ich_cells[LPC_WDT].num_resources--;
} else {
pci_read_config_dword(dev, RCBABASE, &base_addr_cfg);
base_addr = base_addr_cfg & 0xffffc000;
if (!(base_addr_cfg & 1)) {